首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1622篇
  免费   46篇
  国内免费   31篇
测绘学   77篇
大气科学   342篇
地球物理   59篇
地质学   211篇
海洋学   130篇
天文学   3篇
综合类   87篇
自然地理   790篇
  2023年   7篇
  2022年   51篇
  2021年   49篇
  2020年   46篇
  2019年   74篇
  2018年   82篇
  2017年   94篇
  2016年   85篇
  2015年   69篇
  2014年   68篇
  2013年   289篇
  2012年   63篇
  2011年   68篇
  2010年   59篇
  2009年   60篇
  2008年   60篇
  2007年   67篇
  2006年   52篇
  2005年   47篇
  2004年   40篇
  2003年   37篇
  2002年   33篇
  2001年   29篇
  2000年   32篇
  1999年   28篇
  1998年   24篇
  1997年   14篇
  1996年   5篇
  1995年   10篇
  1994年   5篇
  1993年   6篇
  1992年   2篇
  1991年   7篇
  1989年   1篇
  1988年   7篇
  1987年   6篇
  1986年   5篇
  1985年   5篇
  1984年   5篇
  1983年   4篇
  1982年   2篇
  1980年   1篇
  1978年   1篇
排序方式: 共有1699条查询结果,搜索用时 15 毫秒
931.
Ranu Basu 《Geoforum》2004,35(5):621-634
The globalization of neo-liberal policy solutions to education problems has gained increasing dominance in recent years. In Ontario, Canada the success of this ideological discourse, particularly during the past decade, has been hard to combat due to the ideal message that it conveys to the general electorate, that is one based on efficiency, accountability and equity of resources across different school boards in the province. Despite protests from many activist groups (i.e. unions, educators, parent-groups) the implementation of such policies has been largely successful. By tracking education policies, statements and events, newspaper articles and other policy reports from 1995 to 2000, this paper seeks to understand the nature of its success during the early years of restructuring. I argue that part of the success lies in understanding the techniques and strategies of implementation or the process of rationalization. I argue that policies formulated at one spatial level operate quite differently at another and the spatial disjunctures that arise as a result of this process lead to the continued success of neo-liberal ideologies and inequalities in education.  相似文献   
932.
国家资源环境安全的要素综合评价   总被引:10,自引:0,他引:10  
资源环境安全问题始终是世界各国持续发展的核心任务和基本诉求。考虑到单要素和整体两大分析方法的不足,提出一种针对性很强的要素综合分析方法。根据世界上10个人口超过 1亿以上国家的抽样分析表明,土地、水资源、矿产及生态环境的整体状态是决定国家资源环境安全的基本所在。与此同时,为了改善国家,特别是发展中国家的 资源环境脆弱状态和提高其稳定程度,第一是要严格控制人口增长;第二是努力推进本国资源环境开发的国际化进程;第三是增大智力投入以提高资源深度化加工;第四是加大本国生态环境保护力度。  相似文献   
933.
Fulong Wu 《Area》2004,36(3):227-234
How does globalization unfold in the process of urban development? Rather than examine the impact of globalization on the city as if the former were independent of and superimposed on the latter, this paper aims to address how globalization can be imagined, pursued and exploited in the process of local growth. Through examining the emergence of Western architectural motifs in a late socialist capital, Beijing, it is shown that transplanting cityscapes is a conscious action by developers to exploit globalization and thereby overcome the constraints of local markets. By associating themselves with globalization, the development elite hope to sell the vision of the good life in the era of globalization.  相似文献   
934.
Widespread agreement exists on the broad outlines of the concept of sustainable development for developing countries. This calls for a development model capable of meeting basic needs without depleting natural resources at a rate that robs future generations of their use. In this regard, citizen participation is also considered key to legitimise such policy choices. However, there is considerable disagreement over the substance and meaning of the major components of the concept and the relationship between them. This paper argues that positions in policy disputes over the sustainable development of the forest cluster in two distinct approaches: market‐friendly initiatives and grassroots development. Since market economies prevail almost everywhere, the question that is posed concerns the conditions under which the grassroots development approach is included as a significant complement to market‐friendly initiatives. This is a political question, requiring an examination of actors, interests and power resources. The paper thus applies a political economy framework to a paired comparison of Mexico, where grassroots development approaches (community forestry) had notable successes, and Chile, where market‐friendly forest policy crowded out alternatives.  相似文献   
935.
This paper describes and evaluates the impact of spatial policies towards the Capital Region of Korea (the Seoul Capital Region hereafter). Following the introductory section, the second section presents an overview of trends of concentrations of people and employment in the Seoul Capital Region since 1960. The evolution of spatial policies and the major policy instruments employed is described together with an assessment of the validity of the perception of excessive concentration in the Region. In the third section, the impact of spatial polices towards the Seoul Capital Region is evaluated based on new empirical evidence as well as findings from previous studies. The impact of policies on the spatial distribution of jobs and populations between the Seoul Capital Region and the rest of the country, as well as that of specific policies such as green belts, and the new towns project is analyzed. The section ends with a discussion of public opinion on spatial policies revealed through recent surveys. The last section addresses the political economy of spatial policies and concludes with thoughts on the way forward considering the changing environment for spatial policies.  相似文献   
936.
Seong-Kyu Ha 《GeoJournal》2001,53(1):39-45
The purpose of this paper is twofold: first, to analyze the Joint Redevelopment Project (JRP), a housing renewal program in low-income residential communities, and second, to develop a community-based approach to urban redevelopment in Korea. In urban areas of Korea, particularly in Seoul, housing renewal has systematically reduced the supply of substandard housing in the areas where low-income families have concentrated, thereby isolating and marginalizing the displaced tenants. Housing renewal or urban redevelopment projects are basically profit-oriented rather than upgrading-oriented for a community by means of community dynamics and residents' participation. Although many renewal projects have contributed to the increase of homeowners among middle-income families who had enough financial resources for the purchase of a house, there have been no programs giving sufficient consideration to tenants. In fact, most renewal projects displaced low-income residents affected by housing speculation and attracted more middle-income families into the projects.For local governments, a community-based approach to urban policy means encouraging comprehensive planning and cooperation between governments and communities. It is a holistic approach built around families and communities. We need to use a learning and enabling process in order to develop a community-based approach to redevelopment in urban areas of Korea.  相似文献   
937.
Several researchers have argued that Australia is becoming more unequal. This paper briefly explores the reasons why this might be the case before undertaking a social indicator based examination of whether income inequality extends to well‐being generally. Using 176 regions and eight social indicators and focusing on the period 1976–91, the paper shows that inequality has increased, particularly in the last intercensal period. The pattern of ‘winning’ and ‘losing’ is a complex one that suggests increasing differentiation between regions. This finding is set in the context of the social differentiation inherent in postmodern society. Regional policy based on the devolution of spending and responsibility is advocated as one way of helping disadvantaged regions.  相似文献   
938.
Economic transformation in post-socialist eastern Germany revealed inherent inequalities in development opportunities, which had been disguised during the socialist ancien régime. Using local examples from the two contrasting Länder of Mecklenburg-Vorpommern and Saxony, this paper explores how market forces not only exposed these differences, but further entrenched them at the regional and local scales. Local economies demonstrate the differential development very clearly, exposing the significance of regional economic context and raisons d'être of local economic structures. This is genuine locational advantages vis-à-vis activities imposed through ideology rather than economy-driven decrees by the old GDR regime. Many of these state-decreed activities lacked local, and regional, embeddedness, rendering the respective local economies most vulnerable to market operation. They will continue to rely on state support. The problems were exacerbated in those localities lacking support from a regional economy, as in Mecklenburg-Vorpommern. Conversely, market-favoured, economically attractive regions, like Saxony, generally help localities develop their new economic roles, including those with few indigenous advantages. These fundamental differences in opportunities, illustrated here for six cities, are reflected in local policy-making, especially the role of localness and utilization of local identity.  相似文献   
939.
论述了我国中西部山区扶贫开发取得的成就和面临的问题,提出了增强扶贫开发的十项政策措施:搞好宏观调控,转变思想观念,实行优惠政策,加强基础设施建设,采取倾斜政策,开展横向联系,加快发展乡镇企业,搞好智力开发,强化社会化服务体系建设,积极开展扶贫济困活动。  相似文献   
940.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号